NEW YORK – The huddled masses are still able to visit the Statue of Liberty. The Grand Canyon is open for business. The government says other national parks “will remain as accessible as possible,” although some roads at Rocky Mountain National Park are closed as snow goes unplowed. But, while the star-spangled banner yet waves at Fort McHenry in Baltimore, the gates at the War of 1812 landmark are locked. Tourists trekking to parks and historic sites across the U.S.